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Bosch DR9BPX4 Spark Plug

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Rating
3.0 / 5
Overall
BoschDR9BPX4
BrandCode
3.5 / 5
Materials
CopperPlatinum
Ground electrodeCenter electrode
2.0 / 5
Design
Ground typeCenter type
Specifications
1.1mm (.043")9
GapHeat range
⌀18mm1.5mm
Thread diameterThread pitch
11mm (7/16")21mm (13/16")
ReachHex size
TaperedSolid
SeatTerminal
1Non-Projected
Ground countProjection

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Same specs (2)

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Copper-Platinum
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3.0/ 5
.043"11mm, ⌀18x1.5HR 9
Copper-Platinum
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3.0/ 5
.043"11mm, ⌀18x1.5HR 9

One step colder (2)

Colder spark plugs with same characteristics for moderately tuned engines (75–100 hp increase)
Copper-Platinum
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3.0/ 5
.043"11mm, ⌀18x1.5HR 8
Copper-Platinum
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3.0/ 5
.043"11mm, ⌀18x1.5HR 8